<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    
</body>
<script>
    var arr = [
        ["第2条帖子","a","第2条帖子······","2011-02-14"],
        ["第4条帖子","c","第4条帖子······","2011-02-01"],
        ["第3条帖子","b","第3条帖子······","2011-02-23"],
        ["第1条帖子","c","第1条帖子······","2011-02-08"],
        ["第5条帖子","b","第5条帖子······","2011-02-18"]
    ];
    for(var i=0;i<arr.length;i++){
        console.log(arr[i]);
    }
    for(var i=0;i<arr.length;i++){
        for(var j=0;j<arr[i].length;j++){
            console.log(arr[i][j]);
        }
    }
</script>
</html>